Walter Mann Mumma (November 20, 1890 – February 25, 1961) was a Republican member of the U.S. House of Representatives from Pennsylvania. Mumma was born in Steelton. He graduated from the Pennsylvania State Forestry Academy in Mont Alto in 1911. He was employed with the from 1911 to 1916. Mumma was elected as a Republican to the Eighty-second and to the five succeeding Congresses and served from January 1951 until his death in Bethesda, Maryland. He was interred at East Harrisburg Cemetery. Mumma voted in favor of the Civil Rights Acts of 1957 and 1960.